Stop-cock valve



FIG. 1 is a perspective view of a stop-cock valve showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a bottom plan thereof. 

The ornamental design for a stop-cock valve, as shown. 